Wars, politics & history

Dagen H

3 September 1967

Dagen H, or H Day, was the day on which Sweden switched from driving on the left to driving on the right. The change took place early on a Sunday morning, when traffic stopped, drivers changed sides and then drove on carefully. Neighbouring Norway and Finland already drove on the right, and most Swedes drove left-hand-drive cars, which was considered a hazard. A referendum in 1955 had rejected the change by a wide margin, but parliament decided in 1963 to go ahead. A large publicity campaign, with songs, slogans and the letter H on everyday items, prepared the public. The number of accidents fell sharply in the first weeks after the switch, then returned to the earlier level.

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